OL303 1961-1964 Oldsmobile 394 with "Slim-Jim"
OL303 1961-1964 Oldsmobile 394 with "Slim-Jim"

OL303 1961-1964 Oldsmobile 394 with "Slim-Jim" to Chevy Automatic Transmission (166-tooth externally balanced)

by Speed Gems
$1,100.00

Note:

You will be re-using the stock Slim-Jim flywheel with this kit. Remove the original drive plate that is held onto the stock flywheel with 5/16's bolts and 2 pins. Then remove the bolts holding the flywheel to the Old's crankshaft.

The stock starter or an aftermarket replacement must be used with this kit as well.


Materials Included:

(1) Adapter Plate - Olds/Cadillac 1949-1964 to Chevy
(1) Early Olds Crank Adapter
(1) Torque Converter Drive Plate
(2) Dowel Pin .620 x 1
(8) SHCS 7/16-14 x 1
(6) 7/16-20 x 3/4 Flexplate Bolts
(6) SHCS 7/16-20 x 3-1/4
(3) Extra Thick Washer 7/16 H
(3) USS Flat Washer 7/16 YZ 8
(6) 7/16 HC Lock Washer


*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Speed Gems is not responsible for return shipping costs of mismatched kits.

Installation Instructions

Customer Reviews

Based on 3 reviews
100%
(3)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
B
Brian Swanson

awesome kit, everything fit kike a glove

Thank you Brian for the 5 star review :)

G
Gary Timm
1961 Olds convertible

Works great. No vibrations, straight forward installation. Used for a 700r4. Had to do floor modifications. Well worth the effort. Like driving a different car.

Thank you Gary, for taking the time to leave this review!

J
Jason Reutenauer
1964 Olds Dynamic 88 - TH400 swap

I swapped a TH400 transmission into my 1964 Olds Dynamic 88 and used kit OL303. The kit fit perfectly and needed no customization or massaging to fit. I did have to cut a substantial hole in the floor to fit the transmission but knew this going in and this wasn't because of the swap kit. All the bolts came with it and fit where they needed to via the instructions. I've got almost 700 miles on the combination now and I can't be happier.

We are so happier to hear from you Jason! Thank you for taking the time to leave this review!